Another javac issue

[Stefan Marr]

Hi:

Trying to update Truffle, I am running into the next javac issue.
There might be two different things in Java 8 and Java 10:

Java8: (see https://travis-ci.org/smarr/SOMns/jobs/361013742#L681)

```
java.lang.AssertionError: annotation tree hasn't been attributed yet: @SuppressWarnings("deprecation")
	at com.sun.tools.javac.util.Assert.error(Assert.java:133)
	at com.sun.tools.javac.util.Assert.checkNonNull(Assert.java:118)
	at com.sun.tools.javac.comp.Check.validateTypeAnnotation(Check.java:2745)
	at com.sun.tools.javac.comp.Attr$TypeAnnotationsValidator.visitAnnotation(Attr.java:4484)
	at com.sun.tools.javac.tree.JCTree$JCAnnotation.accept(JCTree.java:2317)
	at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
	at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:57)
	at com.sun.tools.javac.tree.TreeScanner.visitModifiers(TreeScanner.java:315)
	at com.sun.tools.javac.tree.JCTree$JCModifiers.accept(JCTree.java:2343)
	at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
	at com.sun.tools.javac.comp.Attr$TypeAnnotationsValidator.visitClassDef(Attr.java:4566)
	at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:693)
	at com.sun.tools.javac.comp.Attr.validateTypeAnnotations(Attr.java:4473)
	at com.sun.tools.javac.code.TypeAnnotations$2.run(TypeAnnotations.java:142)
	at com.sun.tools.javac.comp.Annotate.flush(Annotate.java:155)
	at com.sun.tools.javac.comp.Annotate.enterDone(Annotate.java:129)
	at com.sun.tools.javac.comp.Enter.complete(Enter.java:512)
	at com.sun.tools.javac.comp.Enter.main(Enter.java:471)
	at com.sun.tools.javac.main.JavaCompiler.enterTrees(JavaCompiler.java:982)
	at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:857)
```

and Java 10: (see https://travis-ci.org/smarr/SOMns/jobs/361013746#L4888)

java.lang.NullPointerException
	at jdk.compiler/com.sun.tools.javac.jvm.Code.width(Code.java:280)
	at jdk.compiler/com.sun.tools.javac.jvm.ClassReader.initParameterNames(ClassReader.java:2449)
	at jdk.compiler/com.sun.tools.javac.jvm.ClassReader.readMethod(ClassReader.java:2398)
	at jdk.compiler/com.sun.tools.javac.jvm.ClassReader.readClass(ClassReader.java:2654)
	at jdk.compiler/com.sun.tools.javac.jvm.ClassReader.readClassBuffer(ClassReader.java:2718)
	at jdk.compiler/com.sun.tools.javac.jvm.ClassReader.readClassFile(ClassReader.java:2731)
	at jdk.compiler/com.sun.tools.javac.code.ClassFinder.fillIn(ClassFinder.java:352)
	at jdk.compiler/com.sun.tools.javac.code.ClassFinder.complete(ClassFinder.java:284)
	at jdk.compiler/com.sun.tools.javac.code.Symbol.complete(Symbol.java:633)
	at jdk.compiler/com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1308)
	at jdk.compiler/com.sun.tools.javac.code.Symbol$ClassSymbol.flags(Symbol.java:1242)
	at jdk.compiler/com.sun.tools.javac.comp.Resolve.isAccessible(Resolve.java:410)
	at jdk.compiler/com.sun.tools.javac.comp.Resolve.isAccessible(Resolve.java:394)
	at jdk.compiler/com.sun.tools.javac.comp.Resolve.findImmediateMemberType(Resolve.java:2167)


Has anyone seen these issues before?

I am trying to update SOMns’ Truffle to a version where I don’t need to make changes in SOMns.
However, the same happens on later versions of Truffle, too.

For completeness, the relevant SOMns branch:
https://github.com/smarr/SOMns/tree/update-truffle-no-changes-needed

The only work around currently seems to be to use ECJ instead of javac.

Any ideas what the problem could be?

[I am not using any custom annotation processors, beside the normal Truffle ones.]

Thanks
Stefan

-- 
Stefan Marr
School of Computing, University of Kent
http://stefan-marr.de/research/